106 CLxxiii. GBAMiNEiE. (J. D. Hooker.) [Dimeria. 



above the sheath, spikes slender, raohis filitorm ciliolate at the nodes, 

 spikelets ^-i in., pedicels very short thickened, callus bearded. D. pilo- 

 sissima, Thw. Enwm. PI. Zeyl. 369 ; Trim. Cat. Ceyl. PL 107 {not of 

 Trin.). 



Ten ASSEKiM, Edfer, Griffith {Kern distrib. 6799). Cexlon ; on Adam's Peak 

 (C.P. 24, 3261). „ . , . ^ . , . 



Perennial, stout. Leaves glabrous or villous. Baoemes 2-6 in. ; rachis straight 

 or flexnous ; internodes i-J in. in Tenasserim specimens, much shorter in Ceyloa 

 ones. Spihelets pale or dark, red-brown j gl. I and II acuminate, ciliate in Ceylon, 

 scaberulous in Tenasserim ; II with narrowly membranous margins. 



31. XIUPERATA, CyrilL 

 Perennial, erect, often tall grasses. Spihelets 1-2-fld., in spiciform or 

 thyrsiform silvery-silky panicles, binate, both pedioelled, upper fl. perfect, 

 lower imperfect or 0. Q-lumes 4, membranous, awnless ; I and II lanceolate, 

 hairy; III much smaller, hyaline, glabrous; IV still smaller, hyaliae, 

 glabrous; palea hyaline, glabroiis. Stamens 1-2; anthers large, Imear. 

 Styles connate at the base, stigmas linear. Grain small, oblong, free.— 

 Species 5, tropical, chiefly American ; 2 Asiatic, one also European. 



1. X. arundinacea, Oyrill. PI. Bar. Neap. Fasc.n.'i&, 1. 11 ; panicle 

 very narrow spiciform, branches short appressed, gl. I 5-9-nerved, stamens 

 2. Br. Prodr. 204 : Emnth Enum. PI. i. 477 ; Hack. Monogr. And/rop. 92; 

 Steud. Syn. Oram. 405 ; Reichb. Ic. Fl. Germ. t. 55 ; Boiss. Fl. Orient, v. 

 452 ; Thw. Enum. PL Zeyl 369 ; Trim. Oat. Geyl. PL 106 ; DutUe Grass. 

 N.W. Ind. 14, Indig. Fodd. Grass, t. 15, Fodd. Grass. iV. Ind. 22; Aitehs. 

 Cat. Punjab. PL 173. I. Allang, Jungk. in Tljdschr. Nat. Gesch. vu. 295 ; 

 Steud. L c. 405 (Alang). I. oondensata, Steud. I. c. 431. I. cyhndnca, 

 Beanv. Agrost. 165. I. filifolia, Nees ex Steud. L e. I. Koenigii, Beam. 

 Agrost. 165; WaU. Oat: u. 8850. I. pedicellata, Steud. in Flora, xxix. 

 (1846) 22, Syn. Gram. I.e. I. Sieberi, Opiz. Natural, x. (1825) 190. 1. 

 Sisca, Beauv. ex Steud. Norn. Ed. II. i. 805. I. Thunbergii, Nees ex WaU 

 Cat. n. 8851. Saccharum cylindricum, Lamh. EncycL i. 594 ; Boxh. Fl. 

 Ind. i. 234; Grah. Oat. Bomb. PL 239 ; Grijf. NotuL iii. 80. S. diandrurn, 

 Koen. ex Retz. Ohs. v. 16. S. europium & S. indum, Pers. Syn. i. 103. 

 S. Koenigii, Retz. Obs. v. 16. S. spicatum, Burm. ex Knnth I.e. 8. lagu- 

 roidee, Pourr. in Mem. Acad. Toul. iii. (1788) 326. S. Ravennse, Bieh. Fl. 

 Tour. Cauc. iii. 51. Lagurus cylindricas, Linn. Syst. Nat. Ed. x. 878. 

 Oalamagrostis Lagurus, Koel. Descr. Gram. 112 ; Host Oram. Austr. iv. 

 t. 40. 



Hotter parts of India, from the Panjab southward and eastward to Malacca and 

 Oejlon. — DiSTEiB. All warm countries. 



Rootstock creeping. Btmi 1-3 ft., solid, nodes glabrous or bearded. Leaves. 

 erect, often exceeding the stem. Panicle 3-8 in., silvery with dark anthers and 

 stigmas. Spikelets J-i in., callus-hairs about twice as long as the gls. j gl. I rather 

 thickened towards the base, dorsally hairy, tip obtuse ; II as long as I, 3-7-nerved; 

 III = 4-J II, oblong, irregularly toothed, nerveless; IV ovate, acute, toothed, 

 faintly 1-nerved or nerveless; palea about half as Img as the gl., quadrate, retuse or 

 toothed, nerveless, glabrous. — Hackel distinguishes the Indian form as var. Koemc/n, 

 having villous nodes and broader less rigid leaves, but some of the Indian specimens 

 appear to me quite like the Western. 



Var. latifolia ; stem 3-4 ft. very robust, nodes glabrous, leaves long i-| "i- 

 broad, palea of gl. IV with long-eiliate lobes. — Tropical Himalaya, from Kuniaoa to 

 Assam. 



